Interference No. 103,036
mean either electrically or thermally nonconductive. BR 3938 to
3939.
Mr. Patrick D. Hein testified on the problem of heat
sinking when a battery strength or voltage indicator is attached
to a battery. CR 1075 to 1081. Mr. Hein testified that he
tested various materials and found that group III materials (ten
thin synthetic polymeric films having thicknesses ranging from
0.001 to 0.005 inches) had severe heat sinking problems. CR
1077, 1078, 1080 and 1081.
With respect to the heat sinking problem in the context
of this interference, Mr. Hein testified at CR 1143 that heat
sinking creates difficulties, i.e., it decreases the observed
temperature profile on the battery tester/voltmeter when it is in
proximity to a battery container, thus displaying inaccurate or
incorrect readings when the tester mechanism is activated.
Mr. Hein explained at CR 1194:
In the case of a fresh cell with the
temperature profiles that we exhibited, for
an example, it [the fresh cell] might show
that it had only three-quarters of available
power, when, in effect, it was the fresh cell
that had 100 percent available power.
However, Mr. Hein acknowledged at CR 1195 that one could get an
accurate good/bad type reading if the tester mechanism was
properly designed. He also testified at CR 1195 and 1196:
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